CN216008414U - Rotary drilling short arm drill rod - Google Patents
Rotary drilling short arm drill rod Download PDFInfo
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- CN216008414U CN216008414U CN202122142900.8U CN202122142900U CN216008414U CN 216008414 U CN216008414 U CN 216008414U CN 202122142900 U CN202122142900 U CN 202122142900U CN 216008414 U CN216008414 U CN 216008414U
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- drill rod
- rod
- drill
- tail end
- drilling
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Abstract
The utility model discloses a rotary drilling short arm drill rod, relating to the field of drill rods, the technical proposal of the utility model comprises a first drill rod, a second drill rod, a terminal drill rod and a plurality of middle drill rods; the first drill rod, the second drill rod, the middle drill rod and the tail end drill rod are sleeved in sequence from inside to outside; the outer walls of the first drill rod, the second drill rod and the middle drill rod are axially provided with sliding grooves; the inner walls of the second drill rod, the middle drill rod and the tail end drill rod are provided with limiting bulges arranged with the sliding grooves of the adjacent drill rods; two ends of the second drill rod, the middle drill rod and the tail end drill rod are respectively provided with a corresponding pin hole, and a pin rod is adapted to each pin hole; the lower end of the first drill rod is provided with a drill bit. The environment operation that the adaptation headroom meets the end that can be fine to along with the increase of the degree of depth can be nimble the length of adjustment drilling rod, improve the operating efficiency.
Description
Technical Field
The utility model relates to a dig soon and bore short arm drilling rod mainly relates to the drilling rod field.
Background
With the continuous and rapid advance of the infrastructure construction in China, the bridge engineering construction technology is different day by day. The construction technology of the bored pile foundation has been greatly developed and is suitable for various geological conditions and environments. In recent years, construction projects have appeared a lot of cast-in-situ bored piles which need to be implemented at low clearance, for example, in tunnel construction, geological problems are encountered, and bridges need to be changed and erected; drilling a hole at the lower part of the existing bridge to construct a new building; the operation under the high-voltage wire is influenced by the safety distance, low-clearance equipment is also needed to be adopted for operation, and the construction space height is limited. The common rotary drilling rig has the operation height of tens of meters and is difficult to adapt to the operation in a low-clearance environment.
SUMMERY OF THE UTILITY MODEL
The not enough of prior art more than, the utility model provides a dig soon and bore short armed drilling rod, the environment operation at the end is handed over to adaptation headroom that can be fine to along with the increase of the degree of depth can be nimble the length of adjustment drilling rod, improve the operating efficiency.
In order to achieve the above purpose, the technical scheme of the utility model is that: a rotary drilling short-arm drill rod comprises a first drill rod, a second drill rod, a tail end drill rod and a plurality of middle drill rods; the first drill rod, the second drill rod, the middle drill rod and the tail end drill rod are sleeved in sequence from inside to outside; the outer walls of the first drill rod, the second drill rod and the middle drill rod are axially provided with sliding grooves; the inner walls of the second drill rod, the middle drill rod and the tail end drill rod are provided with limiting bulges arranged with the sliding grooves of the adjacent drill rods; two ends of the second drill rod, the middle drill rod and the tail end drill rod are respectively provided with a corresponding pin hole, and a pin rod is adapted to each pin hole; the lower end of the first drill rod is provided with a drill bit.
The technical principle and the beneficial effects of the utility model are as follows:
the outer walls of the first drill rod, the second drill rod and the middle drill rod are axially provided with sliding grooves; the inner walls of the second drill rod, the middle drill rod and the tail end drill rod are provided with limiting bulges arranged with the sliding grooves of the adjacent drill rods, so that the whole drill rod can be relatively extended and shortened, but cannot relatively rotate in the circumferential direction.
When the drill rod fixing device is used, all drill rods are firstly shortened to the shortest distance, are relatively fixed through the pin rods, then are drilled, the length of each drill rod is extended by one section along with the increase of the depth of the hole, meanwhile, the pin rods are used for fixing the relative positions of the drill rods, and then the length of each drill rod is gradually extended along with the increase of the depth of the hole.
Through the environment operation at the bottom of adaptation headroom can be fine of above scheme to along with the increase of the degree of depth can be nimble the length of adjustment drilling rod, improve the operating efficiency.
Preferably, the lower end of the second drill rod is provided with a water discharging disc, the outer diameter of the water discharging disc is larger than that of the tail end drill rod, the lower portion of the first drill rod is provided with a lower retaining disc, a pre-tightening spring is sleeved outside the first drill rod, and two ends of the pre-tightening spring are respectively abutted to the water discharging disc and the lower retaining disc. The water of drilling can be discharged from the dish that drains, utilizes pretension spring to promote first drilling rod downwards for when the degree of depth in hole is not enough to increase a section drilling rod again, can provide the pretension downwards to the drill bit through the spring.
Preferably, the water discharging disc is provided with a plurality of water through holes. Is convenient for discharging water downwards.
Preferably, the lower baffle disc gradually changes towards the diameter of the drill, and the side wall is provided with a cutting edge. Facilitating the process of drilling to advance downwards.
Preferably, the upper end of the tail end drill rod is provided with a rubber shock absorption pad. Impact force during drilling can be relieved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments will be briefly described below, it is obvious that the drawings in the following description are only two of the embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an embodiment of the present invention;
fig. 2 is a cross-sectional view of an embodiment of the present invention.
The drilling machine comprises a pre-tightening spring 1, a second drill rod 2, a middle drill rod 3, a tail end drill rod 4, a lower baffle disc 5, a water drain disc 6, a drill bit 7, a water through hole 8, a pin hole 9, a rubber shock pad 10, a first drill rod 11, a sliding groove 12 and a limiting protrusion 13.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are merely preferred embodiments of the present invention, rather than all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Examples
As shown in fig. 1, the embodiment of the present invention includes to achieve the above object, and the technical solution of the present invention is: a rotary drilling short-arm drill rod comprises a first drill rod 11, a second drill rod 2, a tail end drill rod 4 and a plurality of middle drill rods 3; the first drill rod 11, the second drill rod 2, the middle drill rod 3 and the tail end drill rod 4 are sleeved in sequence from inside to outside; the outer walls of the first drill rod 11, the second drill rod 2 and the middle drill rod 3 are axially provided with sliding grooves 12; the inner walls of the second drill rod 2, the middle drill rod 3 and the tail end drill rod 4 are provided with limiting bulges 13 which are arranged with the sliding grooves 12 of the adjacent drill rods; two ends of the first drill rod 11, the second drill rod 2, the middle drill rod 3 and the tail end drill rod 4 are respectively provided with a corresponding pin hole 9, and a pin rod is adapted to each pin hole 9; the lower end of the first drill rod 11 is provided with a drill bit 7.
The outer walls of the first drill rod 11, the second drill rod 2 and the middle drill rod 3 are axially provided with sliding grooves 12; the inner walls of the second drill rod 2, the middle drill rod 3 and the end drill rod 4 are provided with limiting bulges 13 which are arranged with the sliding grooves 12 of the adjacent drill rods, so that the whole drill rod can be relatively extended and shortened but cannot relatively rotate in the circumferential direction.
When the drill rod fixing device is used, all drill rods are firstly shortened to the shortest distance, are relatively fixed through the pin rods, then are drilled, the length of each drill rod is extended by one section along with the increase of the depth of the hole, meanwhile, the pin rods are used for fixing the relative positions of the drill rods, and then the length of each drill rod is gradually extended along with the increase of the depth of the hole.
Through the environment operation at the bottom of adaptation headroom can be fine of above scheme to along with the increase of the degree of depth can be nimble the length of adjustment drilling rod, improve the operating efficiency.
The lower extreme of second drilling rod 2 is equipped with drain pan 6, the external diameter of drain pan 6 is greater than the external diameter of terminal drilling rod 4, the lower part of first drilling rod 11 is equipped with down fender dish 5, first drilling rod 11 overcoat has pretension spring 1, pretension spring 1's both ends support respectively to lean on to drain pan 6 with keep off dish 5 down. The water for drilling can be discharged from the water discharging disc 6, the first drill rod 11 is pushed downwards by the pre-tightening spring 1, and when the depth of the hole is not enough to increase one drill rod, the pre-tightening force can be provided downwards for the drill bit 7 through the spring.
The water discharging disc 6 is provided with a plurality of water through holes 8. Is convenient for discharging water downwards.
The lower baffle disc 5 is gradually transited to the circular diameter of the drill 7, and the side wall is provided with a cutting edge. Facilitating the process of drilling to advance downwards.
The upper end of the tail end drill rod 4 is provided with a rubber shock absorption pad 10. Impact force during drilling can be relieved.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. A rotary drilling short-arm drill rod is characterized by comprising a first drill rod (11), a second drill rod (2), a tail end drill rod (4) and a plurality of middle drill rods (3);
the first drill rod (11), the second drill rod (2), the middle drill rod (3) and the tail end drill rod (4) are sleeved in sequence from inside to outside;
the outer walls of the first drill rod (11), the second drill rod (2) and the middle drill rod (3) are axially provided with sliding grooves (12);
the inner walls of the second drill rod (2), the middle drill rod (3) and the tail end drill rod (4) are provided with limiting bulges (13) which are arranged with the sliding grooves (12) of the adjacent drill rods;
two ends of the second drill rod (2), the middle drill rod (3) and the tail end drill rod (4) are respectively provided with a corresponding pin hole (9), and a pin rod is adapted to each pin hole (9);
the lower end of the first drill rod (11) is provided with a drill bit (7).
2. The rotary drilling short arm drill rod according to claim 1, characterized in that: the lower extreme of second drilling rod (2) is equipped with drain pan (6), the external diameter of drain pan (6) is greater than the external diameter of terminal drilling rod (4), the lower part of first drilling rod (11) is equipped with down fender dish (5), first drilling rod (11) overcoat has pretension spring (1), the both ends of pretension spring (1) support respectively to lean on extremely drain pan (6) with keep off dish (5) down.
3. The rotary drilling short arm drill rod according to claim 2, characterized in that: the water discharging disc (6) is provided with a plurality of water through holes (8).
4. The rotary drilling short arm drill rod according to claim 3, characterized in that: the lower baffle disc (5) is gradually transited to the diameter of the drill bit (7), and a cutting edge is arranged on the side wall of the lower baffle disc.
5. The rotary drilling short arm drill rod according to claim 1, characterized in that: and a rubber shock absorption pad (10) is arranged at the upper end of the tail end drill rod (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122142900.8U CN216008414U (en) | 2021-09-06 | 2021-09-06 | Rotary drilling short arm drill rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122142900.8U CN216008414U (en) | 2021-09-06 | 2021-09-06 | Rotary drilling short arm drill rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216008414U true CN216008414U (en) | 2022-03-11 |
Family
ID=80594054
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122142900.8U Active CN216008414U (en) | 2021-09-06 | 2021-09-06 | Rotary drilling short arm drill rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216008414U (en) |
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2021
- 2021-09-06 CN CN202122142900.8U patent/CN216008414U/en active Active
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